Process for production of polyarylene sulfide

Details Process for production of polyarylene sulfide Process for production of polyarylene sulfide

2002-09-27

2009-08-04

Zimmer, Marc S (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From sulfur-containing reactant

C528S388000, C528S503000

Reexamination Certificate

active

07569656

ABSTRACT:
There is provided a method for producing a poly(arylene sulfide) in which a dihalo-aromatic compound and an alkali metal halide are polymerized by heating in an organic amide solvent, wherein the cooling time for the polymerization reaction system is significantly reduced. After the polymerization process, there is provided a cooling process for cooling the polymerization reaction system comprising a liquid phase containing the product poly (arylene sulfide) and the organic amide solvent and a vapor phase containing a gas component (A); and in the cooling process, the gas component (A) in the vapor phase is cooled while the content of a low boiling gas component (A1), which has a lower boiling point than water and exists in the gas component (A), is reduced in the vapor phase of the polymerization system.

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